Install Instructions

Table Of Contents

English (US)

10. Pump setting

Fig. 16 Selection of pump setting for system type

Factory setting: Intermediate proportional-pressure curve,

referred to as PP2.

Proportional-pressure curve (PP1, PP2 or PP3)

Proportional-pressure control adjusts the pump performance to

the actual heat demand in the system, but the pump performance

follows the selected performance curve, PP1, PP2 or PP3.

See fig. 17 where PP2 has been selected.

See section 11. Selection of control mode for further information.

Fig. 17 Three proportional-pressure curves/settings

The selection of the right proportional-pressure setting depends

on the characteristics of the heating system in question and the

actual heat demand.

Constant-pressure curve (CP1, CP2 or CP3)

Constant-pressure control adjusts the pump performance to the

actual heat demand in the system, but the pump performance

follows the selected performance curve, CP1, CP2 or CP3.

See fig. 18 where CP1 has been selected.

See section 11. Selection of control mode for further information.

Fig. 18 Three constant-pressure curves/settings

The selection of the right constant-pressure setting depends on

the characteristics of the heating system in question and the

actual heat demand.

Constant curve/constant speed (I, II or III)

At constant-curve/constant-speed operation, the pump runs at a

constant speed, independent of the actual flow demand in the

system. The pump performance follows the selected performance

curve, I, II or III. See fig. 19 where II has been selected.

See section 11. Selection of control mode for further information.

Fig. 19 Three constant-curve/constant-speed settings

The selection of the right constant-curve/constant-speed setting

depends on the characteristics of the heating system in question.

TM05 5554 3812

TM05 5555 3812

TM05 5556 3812

PP3

PP2

PP1

CP3

CP2

CP1

TM05 5557 3812